Merging Pyramix User Manual page 265

Phase Oscilloscope (stereo mix only)
Stereo Phase Oscillo Interpolate on Stereo Phase Oscillo Meter Stereo Phase VU Meter
A classical phase oscilloscope, which also includes two new display modes :
Stereo Phase stereo-meter : A polar co-ordinates plot of the points displayed by the classical phase oscilloscope
Stereo Phase VU Meter : A circular graph showing directional RMS of the points of the phase stereo-meter as
described above.
Note: Any points or lines below the L - R line represent out of phase samples.
Surround Monitor (surround mix only)
Surround Monitor
This meter shows a true 360° display of your surround-mix. With the added feature of a simple colour code allow-
ing the user to quickly detect phase issues by highlighting them in red.
Principle
A negative phase between two neighboring channels (L-Ls, Ls-Rs, Rs-R, R-C and C-L) is displayed by a "symmetric"
red segment centred halfway between the two channels in question. For example, a phase just below zero
between Ls and Rs will result in a red dot at the "back" i.e. lowest part of the surround monitor display. If, on the
other hand, Ls-Rs were totally out of phase, (phase = -1) the whole 72° (one fifth of 360°) between Ls and Rs lines
would be red. The rule is : a phase of -x will turn red a region of x*72° (linearity is also to angle, not to segment
length).
Final Check Metering : Final Check Window 13 - 265